package org.csmzxyclass2334;

    class BankAccount1 {
        private String accountNumber;
        private double balance;
        public void setAccountNumber(String accountNumber){
            this.accountNumber = accountNumber;
        }
        public String getAccountNumber(){
            return accountNumber;
        }
        public void setBalance(double balance){
            if(balance < 0){
                System.out.println("输入金额有误！");
            }else{
                this.balance = balance;
            }
        }
        public double getBalance(){
            return balance;
        }
        public void broadcast(String accountNumber,double balance){
            System.out.println("账户" + accountNumber + "的余额为" + balance + "元");
        }
    }
    public class Example04 {
        public static void main(String[] args){
            BankAccount1 account = new BankAccount1();
            account.setAccountNumber("123456");
            account.setBalance(-500);
            account.broadcast(account.getAccountNumber(), account.getBalance());
        }
    }
